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Legacy Agent support for rsa2 key upgrading/downgrading #659 (#662)

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Files: libssh2.h, agent.c, userauth.c

Notes:
Part 2 of the fix for #659. This adds rsa key downgrading for agents that don't support sha2 upgrading. It also adds better trace output for debugging/logging around key upgrading.

Credit:
Will Cosgrove (signed off by Michael Buckley)
This commit is contained in:
Will Cosgrove
2022-01-14 11:55:18 -08:00
committed by GitHub
parent 50a1262772
commit de7a74aff2
3 changed files with 62 additions and 9 deletions
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include/libssh2.h
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@@ -508,6 +508,7 @@ typedef struct _LIBSSH2_POLLFD {
#define LIBSSH2_ERROR_KEYFILE_AUTH_FAILED -48
#define LIBSSH2_ERROR_RANDGEN -49
#define LIBSSH2_ERROR_MISSING_USERAUTH_BANNER -50
#define LIBSSH2_ERROR_ALGO_UNSUPPORTED -51
/* this is a define to provide the old (<= 1.2.7) name */
#define LIBSSH2_ERROR_BANNER_NONE LIBSSH2_ERROR_BANNER_RECV